Murabahah means that the seller sells something while making clear: This cost me so much, and now I am selling it at such-and-such a price with this much profit.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / Q10793
Muhammad (may Allah have mercy on him) says that whenever Sayyiduna Uthman bin Affan (may Allah be pleased with him) bought a caravan of camels, he would say: Who will give me a profit of one dinar on this rope?
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10793
Abu Bahr narrates from his shaykh, who said: I saw Sayyiduna Ali (may Allah be pleased with him) wearing a coarse waist-wrap. He said: I bought it for five dirhams; whoever gives me a profit of one dirham on it, I will sell it to him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10794
Hadith Gradingمحدثین:ضعيف
Hadith Takhrij«ضعيف۔ اخرجه احمد في فضائل الصحابة 885»
Ubaydullah bin Abi Ziyad, or Yazid, heard Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) forbidding the sale of a ten-priced item for eleven or a ten-priced item for twelve, and he said: This is only the sale of the non-Arabs. It is possible that it was forbidden when one says: It is yours at ten for twelve, but he does not name the capital, and then names it at the time of payment; and likewise what is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10795