The Difference Between Incense and (Nasal) Drops

Excerpts from the ‘Jurisprudence of Worship’
By Shaykh Muhammad ibn Saalih ibn Uthaymeen رحمه الله تعالى

Question: Oh Noble Shaykh, Perhaps one of you may ask what is the difference between incense and (nasal) drops that descends down to the back of throat and thus is ingested?

Answer:
The difference between the two is that the one who inhaled (the smoke of the incense) verily he intended to have it enter deep into his insides. As for the drops (for his nose) he does not intend for them to enter into his insides, as he only wants to place drops into his nose.

Jurisprudence of Worship- Fatwa Regarding Sáum (Fasting). By Shaykh Muhammad bin Saalih ibn Uthaymeen (pg. 275-276)

Translated by: Abu Uwāis, Muhammad Abdullahi Elmi