This hadith proves that the Sahabi asked for paradise from Prophet (sal Allahu alayhi wasallam) and the Prophet (sal Allahu alayhi wasallam) in return told him to ask for more!! The Prophet(sal Allahu alayhi wasallam) did not say that you asked for Jannah from Ghair Ullah, hence you have become Mushrik!
Narrated Jabir bin 'Abdullah Al-Ansari: Allah's Apostle said, "Name yourselves after me (by my name) but do not call (yourselves) by my Kuniya,for I am Al-Qasim (distributor), and I distribute among you Allah's blessings." This narration has also come on the authority of Anas that the Prophet said so." [Volume 8, Book 73, Number 216: Sahih Bukhari]
[Islamic scholars inform us that Shaykh `Abd Allah al-Ghumari cited it in Murshid al-Ha'ir li Bayan Wad` Hadith Jabir and said, "its chain is good and strong" while in al-Radd al-Muhkam al-Matin (p. 138-139) he adds: "It is the strongest Companion-corroboration (shâhid) I saw for the hadith of `Abd al-Rahman ibn Zayd" as quoted also by Shaykh Mahmud Mamduh in Raf` al-Minara (p. 248). Note also, that Shaykh Abdullah al-Ghumari has also declared in his Al-Ahadith al-Muntaqa fi-Fada'il Rasul Allah (sallallahu alaihi wa sallam) that the narration from Maysara (ra) is "Qawi" - "Strong". Maulana Muhammad ibn Moulana Haroon Abasoomar states: "The chain of narrators for this Hadith is totally different from the previous one. And in fact, Hafiz ibn Hajar [ra] has stated concerning a completely different narration which has the very same chain of narrators, that this chain of narrators is strong. (al-Raddul Muhkamul Mateen pgs.138-139; al-Ahaadeethul Muntaqaa pg.14, both of Shaykh Abdullah Siddique al-Ghumari)" Also, Imam Muhammad bin Yusuf al-Salihi (d.942 AH, and who was a student of Imam al-Hafidh As-Suyuti) said about hadith from Maysara al-Fajr ®: This hadith is narrated by Ibn Jawzi (rah) and the chain of it is “STRONG” and there is nothing wrong in it (Subul al-Hadi wal Rashhad, Volume No.1, Page No. 86 – Dar ul Kutb al iLmiyyah, Beirut.)]