Amud 30a

תוס' ד"ה יתר

Tehillim is eight more than that, etc. - יתר עליו תהלים שמונה כולי

Summary:
It seemingly cannot be that there are more פסוקים in תהלים than in חומש.

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תוס' ד"ה לא

It was only necessary for days - לא צריכא ליומי

Summary:
According to רש"י the ישלש is over a week, according to תוספות it means daily (as we do in תפילה), and according to the ר"ת we can do it by learning תלמוד בבלי.

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תוס' ד"ה נקראו

They were called counters - נקראו סופרים

Summary:
The ראשונים are the סופרים יושבי יעבץ and they are called סופרים, also because they attributed numbers to various הלכות.

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תוס' ד"ה אל

Do not stutter and say to him - אל תגמגם ותאמר לו

Summary:
One may be humble when his knowledge is being tested, but must respond if he is required to instruct or teach.

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