Punjab Preemption Act (1 of 1913) , S.4— Punjab Security of Land Tenures Act (10 of 1953) , S.17— Right of pre-emption-Claim for. by respondent as tenant whether respondent had fulfilled conditions subject to which a tenant could claim rights of preemption-Is mixed question of law and fact-Issue relating to this aspect before Lower Court - Cannot be raised in appeal before Supreme Court - Cannot be raised in appeal before Supreme Court - Only issue raised before Courts below was whether respondent was tenant in respect of law in dispute-Finding as regards tenancy based on fact that rent has been paid by tenant to his landlord-And also on proof of possession showed by production of khasra girdwari-Conclusion arrived at that respondent occupied land as tenant on payment of rent-Not liable to be interfered with. (Para 5 6)