SĪHARFĪ SARDĀR HARĪ SIṄGH NALVĀ, sub-titled "Harī Siṅgh Nalve dī Mahimā," by Qādar Yār, is a poem in Punjabi, Gurmukhī script, celebrating the valour of Harī Siṅgh Nalvā, a general in the army of Mahārājā Raṇjīt Siṅgh. The poem is also popularly known as Vār Sardār Harī Siṅgh Nalvā. Qādar Yār was born around 1805 in Māchhīke village in Sheikhūpurā district and seems to have lived all his life in his village. He did not take interest in household work and devoted himself entirely to the Muse. The text of the Sīharfī is included in Qādar Yār published in 1969 by the Languages Department, Punjab, Paṭiālā. The style is that of a Sīharfī, a poetical form borrowed from Persian in which verses are arranged acrostically following the Persian alphabet comprising thirty letters. The most commonly used metre in the Sīharfī as adopted in Punjabi is baint, the usual themes being chivalry, love and separation. The Sīharfī has a number of versions, with couplets ranging from 23 to 30. The poem centres upon the gallantry and feats of martial prowess displayed by Harī Siṅgh Nalvā in defending the Fort of Jamrūd (April 1837), and his death there.