Берешит 13:1 Мидраш: Seder Olam Rabbah, Pesikta Rabbati & Midrash Tanchuma

From Adam to the Flood was 1656 years, and this is their enumeration: Adam 130, Seth 105, Enosh 90, Kenan 70, Mahalalel 65, Jared 162, Enoch 65, Methuselah 187, Lamech 182, and Noah was six hundred years old, etc." (Genesis 7, 6). Enoch buried Adam, and lived after him 57 years. Methuselah exhausted his days just before the Flood. From the Flood to the division [of languages] was 340 years. Noah lived ten years after the division [of languages]. Our father Abraham was at the division [of languages] 48 years old. Rabbi Yosei said: Eber was so great a prophet that he [preemptively] named his son Peleg ["division"], [aided] by the Holy Spirit. [Eber having foreseen what was to come] as it says "in his days the earth was divided" (Genesis 10, 25).

... [What about all] the praise of Joseph, who exceeded in the honor of his father? And yet he did not enter into him all the time, such that were it not that they came to tell him, "Your father is sick," he would not have known! Rather this is to inform you of his righteousness. For he did not want to be alone with his father, lest he say to him, "How did your brothers act with you?" And [then] he would curse them.... Hence he did not go to his father all the time.)

After her death, Abraham aged rapidly, for it is written: And Abraham was old, and it is also written: The hoary head is a crown of glory (Prov. 16:31). Why was this crown of glory bestowed upon Abraham? Because he performed acts of charity. Therefore, it is written: And Abraham was old. The Holy One, blessed be He, said to him: It is sufficient for a servant to be like his master. This may be compared to a king who has a dear friend, to whom he says: “What present can I give You? You have silver, gold, male servants, handmaidens, fields, and vineyards. I will give you the crown that is on my head, and place it upon your head.” Similarly, the Holy One, blessed be He, said to Abraham: Silver and gold I have given thee, as it is said: And Abram was very rich in cattle, in silver, and in gold (Gen. 13:1); now what can I give you beside the crown that is on My head? When Daniel beheld him, he said: And the hair of his head like pure wool (Dan. 7:9). And therefore it is written: And Abraham was old, and well stricken in age (Gen. 24:1).