Al-Kāfi

Hadith 1016
worship
4ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنْ مُعَاوِيَةَ بْنِ عَمَّارٍ أَوِ ابْنِ وَهْبٍ قَالَ قَالَ أَبُو عَبْدِ الله (عَلَيْهِ الْسَّلام) لِكُلِّ صَلاَةٍ وَقْتَانِ أَوَّلُ الْوَقْتِ أَفْضَلُهُمَا.
4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from Fadalah ibn Ayyub Mu‘awiyah ibn ‘Ammar or ibn Wahab who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘For every Salah (prayer) there are two kinds of timings and the outstanding one is the beginning of time.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī