וַיֹּ֣אמֶר אַבְרָ֗ם אֲדֹנָ֤י יֱהוִה֙ מַה־תִּתֶּן־לִ֔י וְאָנֹכִ֖י הוֹלֵ֣ךְ עֲרִירִ֑י וּבֶן־מֶ֣שֶׁק בֵּיתִ֔י ה֖וּא דַּמֶּ֥שֶׂק אֱלִיעֶֽזֶר׃
And Abram said: ‘O Lord GOD, what wilt Thou give me, seeing I go hence childless, and he that shall be possessor of my house is Eliezer of Damascus?’
Read halakhic rulings (Jewish law) on Genesis 15:2: and classical halakhic sources.