joint family property by these persons. The concept of joint family property which is prevalent amongst the Hindus is not known amongst the Muslims. Abdul Ghafoor, son of Allah Bux, and Mohammad, son of Satai, were the only lessees and no other person. The authorities below misdirected themselves by considering the said acquisition of the property by Abdul Ghafoor and Mohammad as joint acquisition for the family.33 So far as the validity of the lease in question is concerned, the same cannot be disputed by the contesting respondents Nos. 4 to 7 (petitioners of writ petition No. 6635 of 1974). It is not their case that the property was acquired by Abdul Ghafoor and Mohammad in any other manner. It is also not their case nor established by them that the said property was acquired by Satai, the common ancestor, or by Abdul Ghafoor, father of Zahoor Ahmad, in any other manner. Source of acquisition of the said property is the lease deed in question dated 07.05.1922. In the revenue records