This verse by Ghalib was with Bhagat Singh in his cell while he was waiting for the death sentence to be executed
(Phansi Kothri)
It was written in Urdu by him
دکھاؤں گا تماشا دی اگر فرصت زمانے نے
مرا ہر داغ دل اک تخم ہے سرو چراغاں کا
مرزا غالب
दिखाऊंगा तमाशा दी अगर फ़ुरसत ज़माने ने
मेरा हर दाग़-ए-दिल इक तुख्म है सर्व -ए-चिराग़ां का
Dikhaonga tamasha, di agar fursat zamane ne
Mera har dagh e dil ek tukhm hai sarwe chiragan ka