~37 AH (c. 657 CE) · 37 AH
During the fitna (civil strife) in the khilafah (caliphate) of Ali RA, Ammar ibn Yasir RA chose to fight on Ali RA's side against the forces of Muawiyah ibn Abi Sufyan RA. This was at the Battle of Siffin in 37 AH. Ammar drank a last glass of milk, went out to fight, and was killed by an arrow.
His death fulfilled what the Prophet ﷺ had told him decades earlier, while they were building Masjid al-Nabawi. The Prophet ﷺ had said that Ammar would be killed by al-Fiat al-Baghiyah, "the Group That Has Gone Beyond the Bounds." He had also said that the last thing Ammar would drink in this world would be a glass of milk.
Sunni scholars take this hadith to mean that Ali RA was closer to the truth than Muawiyah RA in the civil war. Both are respected as sahaba (companions), and neither is spoken ill of. Muawiyah RA is also regarded as sincere. A third group of sahaba, the "Abadilah" (Abdullah ibn al-Zubayr RA, Abdullah ibn Umar RA and Abdullah ibn Abbas RA), refused repeated calls to fight on either side.
Other events recorded in 37 AH. Their order within the year is not established; use the storyline above for the sequence.
May Allah have mercy on you, O Ammar! You shall be killed by the rebel party.
Said roughly 35 years before Ammar's death at the Battle of Siffin; the lecture does not narrate the occasion on which this was said.
Drank a last glass of milk, then went out to fight at the Battle of Siffin on the side of Ali RA against the forces of Muawiyah ibn Abi Sufyan RA, and fell to an arrow from Muawiyah's side, just as the Prophet ﷺ had foretold decades earlier.
This fulfilled what the Prophet ﷺ had told Ammar RA years earlier while they carried bricks together building Masjid al-Nabawi: that he would be killed by the transgressing group, and that his last drink in this world would be a glass of milk.