The Peak of Eloquence · Hadith 829 (#Passage #1)

ومن خطبة له (عليه السلام) في الشهادة و التقوى وقيل إنه خطبها بعد مقتل عثمان في أول خلافته

Praise of Allāh, transience of this world, and causes of the decline of Allāh’s blessings. (Delivered at the beginning of his caliphate after the killing of ‘Uthmān)

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).