Numbers 13:25

וישבו מתור הארץ מקץ ארבעים יום AND THEY RETURNED FROM THE SEARCHING OF THE LAND AT THE END OF FORTY DAYS — But surely it was four hundred Parsangs (Persian miles) by four hundred Parsangs (Megillah 3a). And the journey of an average man is ten Parsangs a day (Pesachim 94a) and consequently it was a distance of forty days from east to west alone, whilst they traveled during that period along its length and breadth! But the fact is that it was manifest before the Holy One, blessed be He, that He would make a decree against them, "a day for a year" (cf. Numbers 14:34), therefore He shortened the road for them (i. e. He made them cover ground rapidly) (Midrash Tanchuma, Sh'lach 8).

וַיָּשֻׁ֖בוּ מִתּ֣וּר הָאָ֑רֶץ מִקֵּ֖ץ אַרְבָּעִ֥ים יֽוֹם׃

And they returned from searching the land after forty days.