Hadith 4:397
Hafs narrated to us, from al-A'mash, from Ibrahim, who said: There is no harm in [using] nasal drops for the fasting person, but he disliked pouring [liquid] into the ears.
حدثنا حفص عن الأعمش عن إبراهيم قال لا بأس بالسعوط للصائم وكره الصب في الآذان