You can find appreciable disagreement about his year of birth. Mahbūb 'Alī Faqīr Qādirī, in a very biography printed as an appendix to the text of Saiful Malūk provides the day as 1246 AH (1830 AD), a day also accompanied by the Shāhkār Islāmī Encyclopedia; 1830 and 1843 are recommended https://bookmarkmiracle.com/story2395898/the-2-minute-rule-for-sufi-kalam-saif-ul-malook