We dont worship Prophet Muhammad(peace be upon him).
Sending blessings upon him is not equal to worship.
56. Allah sends His
Salat (Graces, Honours, Blessings, Mercy, etc.) on the Prophet (Muhammad
) and also His angels too (ask Allah to bless and forgive him). O you who believe! Send your
Salat on (ask Allah to bless) him (Muhammad
), and (you should) greet (salute) him with the Islamic way of greeting (salutation i.e.
As-Salamu 'Alaikum).
The prophet peace be upon him was asked: How can we send salat(blessings) on you, O messenger of Allah (salallahu aleyhi wassalam). He peace be upon him said:
Abu Muhammad Ka'b bin Ujrah (May Allah be pleased with him) reported: The Prophet sal Allahu alayhi wa sallam came to us and we asked him, “O Messenger of Allah, we already know how to greet you (i.e., say As-salamu alaykum), but how should we supplicate for you?” He said, “Say: `
Allahumma salli `ala Muhammadin, wa `ala aali Muhammadin, kama sallaita `ala aali Ibrahima, innaka Hamidum Majid. Allahumma barik `ala Muhammadin, wa `ala aali Muhammadin, kama barakta `ala aali Ibrahima, innaka Hamidum Majid [O Allah, exalt the mention of Muhammad and the family of Muhammad as you exalted the family of Ibrahim. You are Praised and Glorious. O Allah, bless Muhammad and the family of Muhammad as You blessed the family of Ibrahim. You are Praised and Glorious.]”' [Bukhari and Muslim]
Shaykh ibn al-Uthaymeen rahimahullah states,
The best that can be said concerning this is what Abu'l-'Aaliyah (may Allah have mercy on him) said: The salah (blessing) of Allah upon the Prophet (peace and blessings of Allah be upon him) is His praising him among the “higher group” (the angels). So what is meant by Allahumma salli 'alayhi (O Allah send blessings upon him) is: O Allah, praise him among the higher group, i.e., among the angels who are close to Allah.
Al-Sharh al-Mumti', 3/163, 164
2. (Saying) worship none but Allah. Verily, I (Muhammad
) am unto you from Him a warner and a bringer of glad tidings. (Surah Hud, verse 2)