Ramadan is the best month, and performing Qiyām during its nights is a sublime act. So, whoever performs Qiyām during the entire Ramadan and stays awake in its nights for worship, out of desire for reward from Allah Almighty, without regarding it as burdensome or boring, will have his sins forgiven. In this Hadīth, Abu Hurayrah (may Allah be pleased with him) informs that the Messenger of Allah (may Allah's peace and blessings be upon him) used to urge his Companions (may Allah be pleased with them) to perform Qiyām during the nights of Ramadan. Yet, he did not enjoin them to do so by way of obliging, and he did not impose it upon them. Vehemently: denotes resolve to make something happen. He (may Allah's peace and blessings be upon him) used to say: "Whoever performs Qiyām during Ramadan, out of faith and in pursuit of reward from Allah" i.e., out of belief in the merit of these nights and the virtue of the good deeds performed therein, and in pursuit of Allah's pleasure and out of desire for being rewarded by Him, Exalted be He. Whoever does that, it is hoped that Allah will forgive his past sins. The recompense is expressed in the past tense in Arabic, even though the forgiveness will happen in the future, to denote certainty and assurance about its occurrence, as a favor from Allah Almighty upon His servants. Thus, the Prophet (may Allah's peace and blessings be upon him) encouraged his Ummah to do good and righteous deeds, which lead to the expiation of sins and the increase of their rewards. Then, Abu Hurayrah (may Allah be pleased with him) informed that the Messenger of Allah (may Allah's peace and blessings be upon him) passed away "while this was the case" i.e., the people refrained from praying behind one Imām in the Tarāwīh prayer. Rather, they would pray individually and separately; some would pray in the early part of the night, while others would pray in the latter part; and some would pray at home, while others would pray in the mosque, either because they were observing i‘tikāf (retirement in the mosque) or they belonged to the people of As-Suffah, or due to some other reason. This continued to be the case throughout the caliphate of Abu Bakr and during the early phase of the caliphate of ‘Umar. Then, ‘Umar (may Allah be pleased with him) gathered them behind one Imām and appointed ’Ubayy ibn Ka‘b (may Allah be pleased with him) as their Imām, and he led them in congregational prayer. It continued to be performed congregationally. ‘Umar's action follows the Prophet's action when he led people in this prayer once; yet he did not repeat that for fear that it might be made obligatory for them. Then, when this reason ceased to exist with the death of the Messenger of Allah (may Allah's peace and blessings be upon him) and the revelation stopped, ‘Umar held that it was more appropriate for them to offer it in a congregation as they had done during the lifetime of the Messenger of Allah (may Allah's peace and blessings be upon him). This falls under the legitimate Ijtihād (independent reasoning), for it has a basis in the religion upon which it relies and from which it stems. As for the illegitimate Bid‘ah (religious innovation), it has no basis in the religion or proof upon which it relies. The Hadīth urges the performance of Qiyām during Ramadan and demonstrates its merit. It shows the good understanding and judgment of ‘Umar (may Allah be pleased with him) regarding the religious interests of Muslims, as he also displayed good judgment regarding their worldly interests..