وفى ‏(‏المسند‏)‏‏:‏ من حديث أُمِّ قيـس، عن النبىِّ صلى الله عليه وسلم‏:‏ ‏(‏عليكم بهذا العُود الهندىِّ، فإنَّ فيه سَـبْعَةَ أشْــفِيةٍ منها ذاتُ الجَنْبِ‏) In the Musnad of Imam Ahmad, there is a Hadith from Umm Qays in which Prophet Muhammad صلى الله عليه وسلم said: "Use this Indian wood, for it contains seven Shifa (أشْــفِيةٍ~remedies), including the cure for pleurisy." Costus (Qust): There are two types: (1) The white variety, referred to as al-Bahri (marine costus). (2) The Indian variety, which is hotter and stronger, while the white variety is milder. There is a 3rd type of the Indian wood having a specific name, anyone who knows about it should email me at [email protected] https://www.tibbenabawi.org/healing-by-herbs/herbs-from-seen-to-qaaf/qust-al-bahri