لِّيَشْهَدُوا مَنَافِعَ لَهُمْ (So that they witness benefits for them - 22:28) means that the arduous journey undertaken by people to perform pilgrimage is to their own advantage. The use of the word "benefits" as a common noun (without definite article) points to the universal benefits that may be derived from the pilgrimage. Apart from the spiritual rewards, many material profits may also be obtained. It is indeed remarkable that people who sedulously save pennies over long years in order to be able to defray the high expenses involved in performing the Hajj have never become insolvent, whereas many people are known to have become bankrupt as a result of expenses incurred on marriages or on the construction of palatial houses. It is a common knowledge that no one has become a pauper because of spending on Hajj or ` Umrah, rather it has been noticed, according to some narrations, that Allah Ta’ ala has bestowed such a blessing in this worship that many have gained materially after the ritual. As for the spiritual gains, they are many, one being related by Sayyidna Abu Hurairah ؓ in a hadith in which the Holy Prophet ﷺ said that anyone who performed Hajj in order to gain Allah's favour and avoided sins and obscene acts will return as immaculate and innocent as a newborn baby. (Bukhari and Muslim) (Mazhari)
In addition to the spiritual and material benefits to be obtained from Hajj mentioned above, there is yet another advantage which may be gained when performing it, which is mentioned in the following sentence: وَيَذْكُرُوا اسْمَ اللَّـهِ فِي أَيَّامٍ مَّعْلُومَاتٍ عَلَىٰ مَا رَزَقَهُم مِّن بَهِيمَةِ الْأَنْعَامِ (so that they may recite Allah's name, in specified days, over the provision He gave them from the cattle - 22:28). Here it is important to bear in mind that the main object of sacrificing the animals on this occasion is not their meat, but the mention of Allah's name which is recited while the animal is being slaughtered, which is the essence of the worship. The fact that eating the meat of these animals has been made halal (lawful) for them is an additional reward from Allah. أَيَّامٍ مَّعْلُومَاتٍ (specified days) refer to the 10th, 11th, and 12th days of the month of Dhul-Hijjah when animals may be sacrificed. The words عَلَىٰ مَا رَزَقَهُم مِّن بَهِيمَةِ الْأَنْعَامِ (Over the provision He gave them from the cattle - 22:28) are of general application and include all kinds of sacrifices whether they are obligatory or optional.
فَكُلُوا مِنْهَا So eat there from) Although the word كُلُوا has been used in the imperative mood, it does not mean that eating the meat of these animals is obligatory. Rather, it has been used in the sense that it is permitted and lawful to eat this meat, as it is mentioned in verse وَإِذَا حَلَلْتُمْ فَاصْطَادُوا (When you are out of Ihram, you may hunt - 5:2) for granting permission for hunting.
Ruling
Specially during the period of Hajj, and generally at other times too situations arise when animals must be sacrificed in Makkah . There is one kind of sacrifice which is obligatory and performed to expiate a sin such as killing animals within the precincts of حَرَم Haram. Books of jurisprudence describe in detail the kind of animals killed and the type of animals to be slaughtered to atone for each such animal killed unlawfully. Similarly, if a person commits an act which is forbidden, as long as he is in the state of ihram, he too must slaughter an animal. Jurists call this kind of sacrifice as a دَم الجنَایَہ (sacrifice to atone for a sin). Here also there are specific rules governing each situation. There are certain irregularities which must be expiated by slaughtering a camel or a cow, while in other cases the sacrifice of a goat or sheep is considered sufficient. There are a third kind of irregularities where slaughter of an animal is not necessary, and one can redeem his error by offering sadaqah. This is not the place to discuss these matters in great detail, but the the necessary information on this subject can be found in my booklet Ahkamul-Hajj (احکَام الحج). When an animal is slaughtered for expiating a sin or an irregular act, its meat can be eaten only by the poor and needy persons and it is not permissible for the person making the slaughter or any rich person to eat this meat, and this view is held by all the jurists. As regards other sacrifices, whether obligatory or voluntary, the person offering the sacrifice, his relatives and friends, even though they may be rich, can eat their meat; and the present verse refers to this kind of sacrifice. Here also it is recommended that one-third of the meat be distributed among the poor and needy. The second part of this verse وَأَطْعِمُوا الْبَائِسَ الْفَقِيرَ (and feed the distressed, the poor
- 22:28) explains this point.