בַּבֹּ֙קֶר֙ זְרַ֣ע אֶת־זַרְעֶ֔ךָ וְלָעֶ֖רֶב אַל־תַּנַּ֣ח יָדֶ֑ךָ כִּי֩ אֵֽינְךָ֨ יוֹדֵ֜ע אֵ֣י זֶ֤ה יִכְשָׁר֙ הֲזֶ֣ה אוֹ־זֶ֔ה וְאִם־שְׁנֵיהֶ֥ם כְּאֶחָ֖ד טוֹבִֽים׃
Sa umaga ay ihasik mo ang iyong binhi, at sa gabi ay huwag mong pagpahingahin ang iyong kamay, sapagkat hindi mo alam kung alin ang magtatagumpay, ito ba o iyon, o kung kapwa sila magiging mabuti.
Yevamot
They said That Rabbi Akiva had twelve thousand pairs of disciples, from Gabbat to Antifaras; and they all died at the same time because they did not treat each other with respect.