Chapter on the Rulings of Congregational Prayer (the Minimum Number for Congregational Prayer, the Description of the Imam, Who Is to Be Followed and Who Is Not to Be Followed, Recitation Behind Both of Them, the Rulings of Those Led in Prayer, and Other Such Rulings Related to It)

Tahdhīb al-Aḥkām|Volume 3|Book 1|Chapter 3

Chapter on the Rulings of Congregational Prayer (the Minimum Number for Congregational Prayer, the Description of the Imam, Who Is to Be Followed and Who Is Not to Be Followed, Recitation Behind Both of Them, the Rulings of Those Led in Prayer, and Other Such Rulings Related to It)

وَعَنْهُ عَنِ اِبْنِ أَبِي نَصْرٍ عَنْ عَاصِمٍ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ قَالَ: قُلْتُ لَهُ مَتَى يَكُونُ يُدْرِكُ اَلصَّلاَةَ مَعَ اَلْإِمَامِ قَالَ« إِذَا أَدْرَكَ اَلْإِمَامَ وَ هُوَ فِي اَلسَّجْدَةِ اَلْأَخِيرَةِ مِنْ صَلاَتِهِ فَهُوَ مُدْرِكٌ لِفَضْلِ اَلصَّلاَةِ مَعَ اَلْإِمَامِ»

And from him, from Ibn Abi Nasr from Asim from Muhammad ibn Muslim, who said: I said to Imam : “When is a person considered to have caught the prayer with the imam (of prayer)?” Imam said: “If he catches the imam (of prayer) while he is in the final prostration of his prayer, then he has attained the merit of praying with the imam (of prayer).”

Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 3, p. 64
Shaykh Baqir al-Behbudi
Ṣaḥīḥ al-Tahdhīb

Chapter on the Rulings of Congregational Prayer (the Minimum Number for Congregational Prayer, the Description of the Imam, Who Is to Be Followed and Who Is Not to Be Followed, Recitation Behind Both of Them, the Rulings of Those Led in Prayer, and Other Such Rulings Related to It)

Volume 3, Book 1, Chapter 3

Chapter on the Rulings of Congregational Prayer (the Minimum Number for Congregational Prayer, the Description of the Imam, Who Is to Be Followed and Who Is Not to Be Followed, Recitation Behind Both of Them, the Rulings of Those Led in Prayer, and Other Such Rulings Related to It)

Hadith #109