Imam Abu Ja`far Ibn Jarir and other scholars of Tafsir said that the reason behind killing the camel was that a disbelieving old woman among them named Umm Ghanm `Unayzah, the daughter of Ghanm bin Mijlaz, had the severest enmity among Thamud towards Salih, peace be upon him. She had beautiful daughters and she was wealthy, and Dhu'ab bin `Amr, one of the leaders of Thamud, was her husband. There was another noblewoman whose name was Saduf bint Al-Muhayya bin Dahr bin Al-Muhayya, who was of noble family, wealthy and beautiful. She was married to a Muslim man from Thamud, but she left him. These two women offered a prize for those who swore to them that they would kill the camel. Once, Saduf summoned a man called Al-Habbab and offered herself to him if he would kill the camel, but he refused. So she called a cousin of hers whose name was Musaddi` bin Mihraj bin Al-Muhayya, and he agreed. As for `Unayzah bint Ghanm, she called Qudar bin Salif bin Jundu`, a short person with red-blue skin, a bastard, according to them. Qudar was not the son of his claimed father, Salif, but the son of another man called, Suhyad. However, he was born on Salif's bed (and thus named after him). `Unayzah said to Qudar, "I will give you any of my daughters you wish, if you kill the camel.'' Qudar bin Salif and Musaddi` bin Mihraj went along and recruited several mischievous persons from Thamud to kill the camel. Seven more from Thamud agreed, and the group became nine, as Allah described, when He said,

[وَكَانَ فِى الْمَدِينَةِ تِسْعَةُ رَهْطٍ يُفْسِدُونَ فِى الاٌّرْضِ وَلاَ يُصْلِحُونَ ]

(And there were in the city nine men, who made mischief in the land, and would not reform.) These nine men were chiefs of their people, and they lured the entire tribe into agreeing to kill the camel. So they waited until the camel left the water well, where Qudar waited beside a rock on its path, while Musaddi` waited at another rock. When the camel passed by Musaddi` he shot an arrow at her and the arrow pierced her leg. At that time, `Unayzah came out and ordered her daughter, who was among the most beautiful women, to uncover her face for Qudar, encouraging Qudar to swing his sword, hitting the camel on her knee. So she fell to the ground and screamed once to warn her offspring. Qudar stabbed her in her neck and slaughtered her. Her offspring went up a high rock and screamed. `Abdur-Razzaq recorded from Ma`mar that someone reported from Al-Hasan Al-Basari that the offspring said, "O my Lord! Where is my mother'' It was said that her offspring screamed thrice and entered a rock and vanished in it, or, they followed it and killed it together with its mother. Allah knows best. When they finished the camel off and the news reached Prophet Salih, he came to them while they were gathered. When he saw the camel, he cried and proclaimed,

[تَمَتَّعُواْ فِى دَارِكُمْ ثَلَـثَةَ أَيَّامٍ]

("Enjoy yourselves in your homes for three days.'') [11:65]