Muhhammad  محمد  -  der Gesandte Allahs.  - Sallā Llāhu ʿalaihi wa-sallam  ‏

According to Anas, the Prophet (peace be upon him) has also said:
"The person who offers 40 prayers consecutively in my Mosque, without missing a prayer in between, will secure immunity from the fire of Hell and other torments and also from hypocrisy." (Musnad Ahmad)

Translation: Hadhrat Anas Bin Malik (May Allah be well pleased with him) narrates from the Holy Prophet (Sallallahu alaihi wa sallam) that the Holy Prophet (Sallallahu alaihi wa sallam): Any person who offers 40 Salaat in My Masjid in such a way that no Salaat is missed, for that person freedom from Hell and relief from punishment of Hell is decreed and that person is saved from hypocrisy. (Musnad Imam Ahmed, Hadith No. 12123, Pg. No: 55; Majma Uz Zawaaid, Vol. 4, Pg. No: 8)

It was narrated that Anas ibn Maalik said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said, “Whoever prays for forty days with the congregation, always being present for the first takbeer, it will be written that he will be safe from two things: he will be safe from the Fire and safe from hypocrisy.” (Saheeh al-Tirmidhi)

Imam Abu Hanifa and Imam Ahmed recorded by Ibn Hazm, “Weak hadith is more beloved to us than opinions of men”.