Warss is a yellow dye from a perennial plant cultivated in Yemen, identified usually as Memecylon tinctorium, Melastomaceae or sometimes Flemmingia rhodocarpus BAK, Leguminosae. According to Abū Ḥanīfa Al-Dīnawarī’s chapter on dyestuffs (165-7), it is found only in Yemen and there only, is cultivated. From various sources, he describes the best warss as bādira, from a young plant, the other type called ḥabas h because of some blackness in it; however, the ḥabas h gives pure yellow colour, while bādira can contain some redness in it.
Qust, Zait (Olive oil) & Warss for Zaatul Janb (pleurisy)
1. Hazrat Zaid Bin Arqam رضي الله عنه says that Rasool Allah صلی اللہ علیہ وسلم advised, as a treatment for Zaatul Janb (الجنب ذات) (pleurisy), Warss (ورس), Qust (قسط), & Zait (زيت) (olive oil) & take at one side of mouth (يُلَدُّ). : Reference Ibn Ma-jah: 3596; Book no. 31; In English volume no. 4 Book 31, Hadees no 3467.
2. Qatadah narrated from Abu Abdullah that Zaid Bin Arqam رضي الله عنه said that Nabi صلی اللہ علیہ وسلم would acclaim olive oil ( الزَّيْتَ) and (الْوَرْسَ) Wars for (the treatment of) pleurisy.” Qatadah said: “And it is put in the mouth on the side which he is suffering. ” : Reference Tirmizi: 2222; Book No. 28, In English volume no.4; Book 2, Hadees no 2078.