Sayyiduna Bilal (may Allah be pleased with him) narrates: When this verse was revealed: (Allah Almighty says:) "Their sides forsake their beds", we were sitting in a gathering, and some of the Companions of the Prophet (peace and blessings be upon him) kept offering (voluntary) prayer from after Maghrib until Isha; so this verse was revealed about it: "Their sides forsake their beds."
Al-Bazzar recorded it from his teacher Abdullah bin Shabib, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 11266