The reward for reaching the opening takbir in the congregational prayer for forty day

مَنْ صَلَّى لِلّهِ أَرْبَعِيْنَ يَوْمًا فِي جَمَاعَةٍ يُدْرِكُ التَّكْبِيْرَةَ الأُوْلَى كُتِبَتْ لَهُ بَرَاءَتَانِ: بَرَاءَةٌ مِنَ النَّارِ وَبَرَاءَةٌ مِنَ النِّفَاقِ

From Anas, may Allaah be pleased with him, that the Prophet صلى الله عليه وسلم said:

“Whoever prays with the congregation reaching the opening takbir for forty days, two [declarations of] freedom are written for him: [a declaration of] freedom from the Fire, and [a declaration of] freedom from hypocrisy.”

*Silsilah *|2652 | Hasan