on others." Then I saw it in "The Deeds of the Day and Night" by Ibn al-Sunnī, number (241), from another route from Ḥammād ibn Salamah, narrated by Thābit and Ḥumayd from Anas with it. And this is an authentic chain. It is supported by the well-known ḥadīth of the one who performed his prayer incorrectly, reported by Abū Hurayrah: "The Messenger of Allāh ﷺ entered the mosque, and a man entered and prayed, then came and greeted the Messenger of Allāh ﷺ. The Messenger of Allāh ﷺ returned the greeting and said, 'Go back and pray, for you have not prayed.' The man returned and prayed as he had prayed before, then came to the Prophet ﷺ and greeted him. (He did this three times)." It was recorded by al-Bukhārī and Muslim, among others. Based on this, Ṣiddīq Ḥasan Khān argued in "The Descent of the Righteous" (pp. 350-351) that: "If a person greets him and then meets him shortly after, it is recommended to greet him a second and third time." It also provides evidence for the legitimacy of greeting those in the mosque, as indicated by the ḥadīth of the greetings of the Anṣār to the Prophet ﷺ in the Mosque of Qubāʾ, as previously mentioned. Despite all this, we find some of the obstinate who do not heed this sunnah, entering the mosque without greeting those inside, claiming that it is disliked. Perhaps what we have written serves as a reminder for them and others, and reminders benefit the believers.