Hadith 5688
`Abdallah b. `Amr b. al-`As told that God's messenger pointed to something like a bowl and said, "If a piece of lead like this were sent from heaven to earth, which is a journey of five hundred years, it would reach the earth before night; and if it were sent from the top of the chain[*] it would travel forty years night and day before reaching its foot (or, its bottom)." *Quran; 69:32 Tirmidhi transmitted it.
وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ الْعَاصِ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَوْ أَنَّ رَصَاصَةً مِثْلَ هَذِهِ - وَأَشَارَ إِلَى مِثْلِ الْجُمْجُمَةِ - أُرْسِلَتْ مِنَ السَّمَاءِ إِلَى الْأَرْضِ وَهِيَ مَسِيرَةُ خَمْسِمِائَةِ سَنَةٍ لَبَلَغَتِ الْأَرْضَ قَبْلَ اللَّيْلِ وَلَوْ أَنَّهَا أُرْسِلَتْ مِنْ رَأْسِ السِّلْسِلَةِ لَسَارَتْ أَرْبَعِينَ خَرِيفًا اللَّيْلَ وَالنَّهَارَ قَبْلَ أنْ تبلع أَصْلهَا أَو قعرها» رَوَاهُ التِّرْمِذِيّ