Mukhtasar Bukhari (Abridged) 281 — Helping each other in building

Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) began to narrate a hadith (one day) until he reached the account of the construction of the mosque (the Prophet's Mosque). He said: We used to lift one brick each, and Sayyiduna Ammar (may Allah be pleased with him) used to lift two bricks. When the Prophet Muhammad (peace and blessings be upon him) saw him, he began to dust the dirt off his (body) and kept saying: "Woe to Ammar's distress! A rebellious group will kill him; they will call him towards Paradise, and he will call them towards Hellfire." Abu Sa'id (may Allah be pleased with him) says that Ammar used to say: "I seek refuge with Allah from tribulations."