who purchased the land for masjid e nabwi
Al-Masjid an-Nabawi The mosque was built by Muhammad in 622, after his arrival in the city of Medina.[12] Riding on a camel called Qaswa he arrived at the place where this mosque was built. The land was owned by Sahal and Suhayl, partly as a place for drying dates, and at one end had been previously used as a burial ground.[13] Refusing to "accept the land as a gift", he bought the land and it took seven months to complete the construction of the mosque. It measured 30.5 m × 35.62 m (100.1 ft × 116.9 ft).[13] The roof which was supported by palm trunks was made of beaten clay and palm leaves. It was at a height of 3.60 m (11.8 ft). The three doors of the mosque were Bab-al-Rahmah to the south, Bab-al-Jibril to the west and Babal-Nisa to the east.[14][13]
Qutb Minar Qutab Minar was established along with Quwwat-ul-Islam Mosque around 1192 by Qutab-ud-din Aibak, first ruler of the Delhi Sultanate.[6] The mosque complex is one of the earliest that survives in the Indian subcontinent.[7][8] The minaret is named after Qutab-ud-din Aibak, or Qutabuddin Bakhtiar Kaki, a Sufi saint.[9] Its ground storey was built over the ruins of the Lal Kot, the citadel of Dhillika.[10] Aibak's successor Iltutmish added three more storeys.[9] The minar's topmost storey was damaged by lightning in 1369 and was rebuilt by Firoz Shah Tughlaq, who added another storey. In 1505, an earthquake damaged Qutub Minar; it was repaired by Sikander Lodi. On 1 September 1803, a major earthquake caused serious damage. Major Robert Smith of the British Indian Army renovated the tower in 1828 and installed a pillared cupola over the fifth story, thus creating a sixth. The cupola was taken down in 1848, under instructions from The Viscount Hardinge, then Governor General of India. It was reinstalled at ground level to the east of Qutab Minar, where it remains. It is known as "Smith's Folly".[11]