Spiny rounded fruits
General botanical terminology
Hasak is a general term given to rounded spiny fruits of the terrestrial desert annual herbs. These kinds of thorny fruits attach to the hairs of livestock, human feet, sandals, or soles. Ahsak Al-Zar’ means it grows its spines. Most of the plants which have these kinds of spiny fruits are creeping plants; they extend their branches along the ground.
The term hasak is not mentioned in the Holy Qur’an.
Narrated Abu Sa’id Al-Khudri, the prophet Muhammad (peace Be upon him), said: “Then the bridge would be set up over the hell and intercession would be allowed and they will say: ‘O God, keep safe, keep safe’. it was asked: Messenger of Allah, what is this bridge? he said: ‘the void in which one is likely to slip. There would be hooks, tongs, and spits like the thorn (Hasak) that is found in Najd and is known as sa’adan. The believers would then pass over within the twinkling of an eye, like lightning, like wind, like a bird, like the finest horses and camels’,” Sahih Muslim, The Book of Faith.
ElGharib, A. E.; Botanical terms in the Holy Qur'an and Hadith "Hasak". Qatar Foundation’s Fortnightly newspaper, issue 107, Thursday 20 March 2014.