Riyad as-Salihin
Riyad as-Salihin 1122
Arabic hadith text
وعن عبد الله بن مغفل، رضي الله عنه عن النبي صلى الله عليه وسلم قال: "صلوا قبل المغرب" قال في الثالثة: "لمن شاء" ((رواه البخاري)).
Translation
'Abdullah bin Mughaffal (May Allah be pleased with him) reported
The Prophet (ﷺ) said, "Perform two Rak'ah before Maghrib prayer." He (ﷺ) repeated it twice; when repeating it for the third time he added: "He who may so wish."[Al- Bukhari].