"Ya qalbi, ya qalbi... (O my heart, O my heart...)" followed by the Shahada and the basics of faith.
: Procedures for Tahlil and Talqin (Academia.edu) offers practical examples of the text used during funerals. (PDF) Talqin Zikir sebagai Metode Dakwah - ResearchGate kalimat talqin
This is why scholars call Talqin "the weapon of the deceased in the grave." "Ya qalbi, ya qalbi
This is not a "conversation" with the dead in the worldly sense, but a spiritual act of tawassul (mediation) and du’a (supplication). It serves as a final reminder to the soul as it enters the Barzakh (the intermediate realm between this world and the Hereafter). ya qalbi... (O my heart
Understanding Kalimat Talqin: Guiding the Deceased in the Grave