Quaid-e-Azam called Islam 'Our bedrock and sheet anchor" while addressing ___?

Quaid-e-Azam called Islam 'Our bedrock and sheet anchor" while addressing ___?

قائداعظم نے خطاب کرتے ہوئے اسلام کو ’’ہمارا بستر اور چادر کا لنگر‘‘ قرار دیا۔
Explanation

Quaid-e-Azam called Islam "Our bedrock and sheet anchor" while addressing: Punjab Student Federation

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Punjab Muslim Student Federation or MSF is a conservative Pakistani political group that was started on September 1, 1937

Muslim Student Federation or MSF was started in Calcutta, India   by the old All-India Muslim League