It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that a man from the tribe of Ghatafan, who was called Sulayk, came while the Prophet (peace and blessings be upon him) was standing delivering the sermon, so the Prophet (peace and blessings be upon him) said to him: "O Sulayk, stand up and pray two light rak'ahs."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 6667