It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Indeed, al-Wasilah is a rank with Allah above which there is no rank, so ask Allah to grant it to me."
Hadith Referenceالمعجم الأوسط / باب الألف / 263
Hadith Takhrij«أخرجه أحمد فى «مسنده» برقم: 11963، والطبراني فى «الأوسط» برقم: 1466»