ZAFARNĀMAH MU'ĪN UL-MULK, an unpublished manuscript, is a book written in 1748-49 by Ghulām Muhaiy ud-Dīn Khān. It gives an account of Ahmad Shāh Durrani's first two invasions of India. Copies of the manuscript are available at the University of the Pañjab, Lahore, Khālsā College, Amritsar, and in the Punjab Historical Studies Department of Punjabi University, Paṭiālā. The author appears to be a courtier or a great admirer of Mu'īn ul-Mulk, the Mughal governor of the Punjab from 1748 to 1753, whose dauntless courage and administrative capability he profusely praises. He seems to be a well-read person with a scholarly style of writing rich in quotations from Arabic texts. A sizable portion of the book is in verse. The historical information it contains appears to be based on personal knowledge of the author and is on the whole correct and useful.
The Zafarnāmah (lit. record of victories) opens with invocation to God followed by a qasīdah or panegyric in praise of the book's protagonist. Mu'in ul-Mulk, known to Sikh chroniclers as Mīr Mannū, was the son of Wazīr Qamar ud-Dīn, the prime minister of the Mughal emperor Muhammad Shāh. When Ahmad Shāh Durrānī invaded India for the first time at the head of fifty thousand horsemen, early in January 1748, Shāh Nawāz Khān, governor of Lahore and Multān, fled to Delhi offering only a feeble resistance and the invader occupied Lahore which, says the author, was subjected to thorough plunder, a part of it being set on fire. Emperor Muhammad Shāh sent a huge force led by Wazīr Qamar ud-Dīn under the nominal command of the crown prince, Ahmad Shāh, to drive away the invader. Mu'in ul-Mulk accompanied his father. In the beginning of the battle fought at Manūpur, 15 km northwest of Sirhind, Qamar ud-Dīn was mortally wounded by a cannon shot. Mu'in ul-Mūlk at once took command of the situation. Suppressing his filial tears, he hurriedly buried his father's dead body in the floor of his sleeping tent, levelling it over with sand, and launched a fierce attack against the enemy lines. A severe battle followed resulting in heavy casualities on both sides but it ended in victory for the Mughals. The Durrānī quietly retreated during the night to Lahore and thence to his own country. During his return journey he was constantly harassed and looted by the Sikhs.
Just during this time news arrived of imminent death of the emperor at Delhi. Prince Ahmad Shāh, directing Mu'in ul-Mulk to take charge as governor of Lahore and Multān, hastened back to Delhi, where he succeeded to the throne of his father who had expired before the son's arrival in the capital. Mu'in ul-Mulk came to Lahore and immediately attended to the shattered civil administration of the province and provided relief to the oppressed populace. He replaced Lakhpat Rāi by Kauṛā Mall as his Dīwān and confirmed Adīnā Beg Khān in the faujdārī of Jalandhar Doāb.
Ahmad Shāh Durrānī descended upon the Punjab for the second time in December 1748. Mu'in ul-Mulk promptly sent forth a strong force which faced the invading horde on the bank of the River Chenāb. Ahmad Shāh offered to go back if the Punjab governor paid the arrears and undertook regular payment in future of the revenue of four mahāls or districts of Gujrāt, Auraṅgābād, Siālkoṭ and Pasrūr which he claimed had been assigned to Nādir Shāh and were legitimately his now. Mu'in ul-Mulk wrote back that it was stupid to engage in a battle where Muslims would be killed on both sides. He prudently agreed to pay the dues, and Ahmad Shāh returned to Qandahār.