Prayer is the best matter, and a Muslim is allowed to offer voluntary prayer at any time of night or day except for the times in which the Prophet (may Allah's peace and blessings be upon him) prohibited voluntary prayer, namely after dawn until sunrise and after 'Asr until sunset. In this Hadīth, the Tābi'i Abu Salamah ibn' Abdur-Rahmān ibn' Awf reports that he asked the Mother of the Believers, 'Ā’ishah (may Allah be pleased with her), about the two Rak'ahs (unit of prayer) that the Messenger of Allah (may Allah's peace and blessings be upon him) used to pray after 'Asr, and why he prayed them, or whether the Prophet (may Allah's peace and blessings be upon him) performed them regularly or not. Thereupon, 'Ā’ishah (may Allah be pleased with her) said: "He used to pray them before 'Asr," i.e., as a supererogatory and Sunnah Qabliyyah (before the obligatory prayer) of the 'Asr prayer. "Then, he got distracted from them or forgot them," being doubtful about the reason why he did not pray them before 'Asr that time. "Then, he continued observing them" after that, "as whenever he offered a prayer, he would continue observing it" regularly. In the Two Sahīh Collections, the reason why he did not pray the two Rak'ahs before 'Asr is mentioned, as the Prophet (may Allah's peace and blessings be upon him) said while talking to' Umm Salamah (may Allah be pleased with her): "O Daughter of Abu' Umayyah, you asked about the two Rak'ahs after 'Asr. Some people of 'Abdul-Qays came to me and distracted me from the two Rak'ahs after Zhuhr, so those are the two (Rak'ahs I was praying)." This indicates that the two Rak‘ahs were offered to make up for the missed Sunnah Ba‘diyyah (after the obligatory prayer) of Zhuhr and not to make up for the missed two Rak‘ahs before ‘Asr..