2- From the Pillars and Signs of Islaam
“Indeed Islaam has milestones, and sign posts like the lights which illuminate the pathways. From them is that you believe in Allaah and do not associate anything with Him, and you establish the prayer, give Zakaat, fast Ramadan, perform the Hajj to the House, and command the good, and forbid evil, and to give Salaam to your family if you enter upon them, and to give salaams to the people if you pass by them, so whoever leaves something of this, then he has left a portion of Islaam, and whoever leaves all of them, then he has turned his back on Islaam.”
Silsilah Saheehah : 333
A benefit: The saying of the Messenger after he mentioned, belief in Allaah is a portion of Islaam, like the prayer and the Zakaat; “……..whoever leaves something of this, then he has left a portion of Islaam, and whoever leaves all of them, then he has turned his back on Islaam.”
I (Albaani) say: This is a clear text which shows that a Muslim does not leave Islaam by not performing some its duties, such as is the prayer. It is sufficient for the one who does not perform it to be a disobedient person, whose testification will not be accepted, and an evil end is feared for him.
There has been a detailed piece of research which has already been completed under the section of ‘Hukm Tarik as-Salaat’ (The ruling of the one who abandons the prayer) in hadeeth no.87.
This hadeeth is a decisive evidence about what we have mentioned in this issue. That is why some of the people tried to invalidate these evidences by trying to show it as Da’eef (weak hadeeth). How wrong they are! We have indeed refuted them with proofs and clear signs, and with an explanation from what the scholars of Islaam have authenticated.
Taken from the Shaykh’s amendments to volume one of Silsilah Saheehah Vol.1 /no. 13 / p.935