Al-Kāfi

Hadith 1019
worship
7ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ أَحْمَدَ بْنِ إِسْحَاقَ عَنْ بَكْرِ بْنِ مُحَمَّدٍ الأزْدِيِّ قَالَ قَالَ أَبُو عَبْدِ الله (عَلَيْهِ الْسَّلام) لَفَضْلُ الْوَقْتِ الأوَّلِ عَلَى الأخِيرِ خَيْرٌ لِلرَّجُلِ مِنْ وَلَدِهِ وَمَالِهِ.
7. Al-Husayn ibn Muhammad has narrated from Muhammad ibn Ahmad ibn Ishaq from Bakr ibn Muhammad al-Azdiy who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘The outstanding quality of the beginning of time for Salah (prayer) compared with the end of time for Salah (prayer) is better for a man than his children and belongings.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī