Succession to Prophet Muhammad (pbuh): The Event of Ghadeer Khum

The prophet then stopped in that exact place (Khum) and told his companions to set a stage, the Prophet then gave a sermon in front of approx. 100,000 and announced his successor Imam Ali (as), he said:

"For whomsoever I am Leader (Mawla) Ali is his Leader" the Holy Prophet then added "O Allah love those who love him and be hostile to those who are hostile to him".

On that very same day the following verse was revealed:

"This day I have perfected for you your religion and completed my favor on you and chosen for you Islam as a religion." (5:3)

Sunni References:

(1) Sahih Tirmidhi, v2, p298, v5, p63

(2) Sunan Ibn Maja, v1, pp 12,43

(3) Khasa'is, by al-Nisa'i, pp 4,21

(4) al-Mustadrak, by al-Hakim, v2, p129, v3, pp 109-110,116,371

(5) Musnad Ahmad Ibn Hanbal, v1, pp 84,118,119,152,330, v4, pp 281,368,370, 372,378, v5, pp 35,347,358,361,366,419 (from 40 chains of narrators)

(6) Fada'il al-Sahaba, by Ahmad Hanbal, v2, pp 563,572

(7) Majma' al-Zawa'id, by al-Haythami, v9, p103 (from several transmitters)

(8) Tafsir al-Kabir, by Fakhr al-Razi, v12, pp 49-50

(9) Tafsir al-Durr al-Manthur, by al-Hafiz Jalaluddin al-Suyuti, v3, p19

(10) Tarikh al-Khulafa, by al-Suyuti, pp 169,173

(11) al-Bidayah wal-Nihayah, by Ibn Kathir, v3, p213, v5, p208

(12) Usdul Ghabah, by Ibn Athir, v4, p114

(13) Mushkil al-Athar, by al-Tahawi, v2, pp 307-308

(14) Habib al-Siyar, by Mir Khand, v1, part 3, p144

(15) Sawaiq al-Muhriqah, by Ibn Hajar al-Haythami, p26

(16) al-Isabah, by Ibn Hajar al-Asqalani, v2, p509; v1, part1, p319, v2, part1, p57, v3, part1, p29, v4, part 1, pp 14,16,143

(17) Tabarani, who narrated from companions such as Ibn Umar, Malik Ibn al-Hawirath, Habashi Ibn Junadah, Jari, Sa'd Ibn Abi Waqqas, Anas Ibn Malik, Ibn Abbas, Amarah,Buraydah,...

(18) Tarikh, by al-Khatib Baghdadi, v8, p290

19) Hilyatul Awliya', by al-Hafiz Abu Nu'aym, v4, p23, v5, pp26-27

(20) al-Istiab, by Ibn Abd al-Barr, Chapter of word "ayn" (Ali), v2, p462

(21) Kanzul Ummal, by al-Muttaqi al-Hindi, v6, pp 154,397

(22) al-Mirqat, v5, p568

(23) al-Riyad al-Nadirah, by al-Muhib al-Tabari, v2, p172

(24) Dhaka'ir al-Uqba, by al-Muhib al-Tabari, p68

(25) Faydh al-Qadir, by al-Manawi, v6, p217

(26) Yanabi' al-Mawaddah, by al-Qudoozi al-Hanafi, p297

(There are hundreds more in the Sunni tradition of Islam)