Muhammad bin Jubair bin Mut’im narrated from his father, who heard in the Farewell Pilgrimage on the day of Arafah, the sermon of the Messenger of Allah (peace be upon him): “O people! Indeed, I do not know whether after today I will be able to meet you again at this place. So may Allah have mercy on the person who heard my words today and remembered them. Some who learn jurisprudence (fiqh) are not themselves jurists, and many who carry jurisprudence convey it to someone more knowledgeable than themselves. And O people! Know that your wealth and your blood are sacred to each other just as the sanctity of this day, this month, and this city. And listen! Hearts will not betray in three things: making deeds sincere for Allah, being sincere with the rulers, and adhering to the community of Muslims. Indeed, their supplication encompasses them.” (That is, the supplication surrounds them for protection from calamities and afflictions.)
In this, there is a supplication of goodness for the Ahl al-Hadith.
Allamah Badi‘ al-Zaman said: From this hadith, it is understood that jurisprudence (fiqh) is the name of hadith itself; through its knowledge and investigation, a person becomes a jurist (faqih) in the sight of Allah, and there is glad tidings in this that after the era of the Companions (radi Allahu anhum), there will be many jurists (fuqaha) among the Followers (Tabi‘in), and they will collect ahadith.
See the commentary on the upcoming hadith «نَضَّرَاللّٰهُإِمْرَأًسَمِعَمِنَّاشَيْئًا.»
´It was narrated from Muhammad bin Jubair bin Mut’im that his father said:` “The Messenger of Allah (ﷺ) stood up in Khaif in Mina, and said: ‘May Allah make his face shine, the man who hears my words and conveys them. It may be that the bearer of knowledge does not understand it, and it may be that he takes it to one who will understand it more than he does. There are three things in which the heart of the believer does not betray: sincerity of action for the sake of Allah, offering sincere advice to the rulers of the Muslims, and adhering to the Jama’ah (main body of the Muslims). Their supplication is answered (i.e. encompassing every good, and all of the people).”
Maulana Ataullah Sajid
Benefits and Issues:
➊ The foundation of jurisprudence (fiqh) is the Prophetic hadith. Any ijtihad (independent reasoning) that is not based on the Qur’an and hadith is not reliable.
➋ Scholarly matters should be conveyed to others.
➌ One should acquire religious knowledge even from a person who, apparently, is lesser in knowledge, age, or status. Sometimes, such a person may provide an academic point that is not found even with the great scholars.
➍ There is no limit to knowledge and understanding (tafaqquh). It is possible that someone who comes later may comprehend an ijtihadi or scholarly point to which the attention of earlier great scholars was not drawn.
➎ The heart of a believer does not betray; this means that a believer strives to perform these three deeds in the best possible manner and does not fall short.
➏ The requirement of a believer’s goodwill towards another believer is that he should not pray only for himself, but also for others—whether they are friends or relatives, strangers, fellow countrymen, or residents of other regions.
➐ Whoever prays for others also receives the prayers of others. (See also Benefits and Issues: Hadith: 230)
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 3056