It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever fasts a day of Ramadan in complete silence and calm, a house of green chrysolite or red ruby will be built for him in Paradise."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ibn Thawban (may Allah have mercy on him) except al-Walid bin al-Walid al-Qalanisi (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الألف / 1768
Hadith Gradingمحدثین:فيه الوليد بن الوليد مختلف فيه
Hadith Takhrij«قال الهيثمي: فيه الوليد بن الوليد وثقه أبو حاتم وضعفه جماعة «مجمع الزوائد ومنبع الفوائد، ج 3، ص 143»»