The first mention of the Parah Adumah in Parshas Chukas (Numbers 19:2) is:
דַּבֵּ֣ר אֶל־בְּנֵ֣י יִשְׂרָאֵ֗ל וְיִקְח֣וּ אֵלֶיךָ֩ פָרָ֨ה אֲדֻמָּ֜ה
Instruct the people of Israel to bring you a red cow without blemish
There "פָרָה" is without a dagesh (dot inside) and is pronounced with an "F" sound- "farrah."
Why is the first mention of the Parah Adumah "פָרָה" instead of "פָּרָה"?