Kulayb bin Shihab states: Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) heard a resounding noise in the mosque: people were reciting the Qur'an and teaching it. Sayyiduna Ali (may Allah be pleased with him) said: Glad tidings to these people! These people were the most beloved of people to the Messenger of Allah (peace and blessings be upon him).
Imam al-Tabarani recorded it in al-Mu'jam al-Awsat, and Imam al-Bazzar recorded something similar. The chain of Imam al-Tabarani contains a narrator, Hafs bin Sulayman al-Ghadiri, who is matruk (abandoned); according to one report Imam Ahmad declared him thiqah (trustworthy), and according to another he called him da'if (weak). The chain of Imam al-Bazzar contains a narrator, Ishaq bin Ibrahim al-Thaqafi, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 11675